An Introduction to Hygiene

briefly with such subjects as relative strengths of acids and bases, molecular weights, the analogy betw een gaseous and dissolv.ed states, indicators and hydrogen ion concentration. Armed with the information obtained in the first part of the book, the reader is in a position to understand the theory underlying tlhe suggestions fol-practical work set out in the later chapters. The reactions of the more common metallic and acidic radicals are described, and later summarized in a conv-enieint scheme for practical qualitative analysis. A chapter on elementary volumetric analysis is included, and sev,eral exalmples are given in order to illustrate how-the calculations involved may be worked out. The appendix contains many interesting suggestions for experiments witth common organic The book shouldl prove very useful to those sitting for university-entrance scholarships and first-year degree examinatioins in chemistry.